Butternut, sometimes called white walnut, is great for carving and other uses, but it is potentially an endangered species.

Black walnut trees produce a chemical called juglone as ... and is also found in smaller concentrations in the leaves, bark, wood, and nut hulls. While other types of trees also produce juglone ...

The best quality trees are frequently found on flood free ledges just above stream banks. This species will live on poorer soils, but growth is slow and the wood quality is generally poor. The natural ...